Tachyon fields with effects of quantum matter in an anti-de sitter universe

Emilio Elizalde, John Quiroga Hurtado

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    6 Citations (Scopus)


    We consider an Anti-de Sitter universe filled by quantum conformal matter with the contribution from the usual tachyon and a perfect fluid. The model represents the combination of a trace-anomaly annihilated and a tachyon driven Anti-de Sitter universe. The influence exerted by the quantum effects and by the tachyon on the AdS space is studied. The radius corresponding to this universe is calculated and the effect of the tachyon potential is discussed, in particular, concerning the possibility to get an accelerated scale factor for the proposed model (which yields an accelerated expansion of the AdS type of universe). Fulfillment of the cosmological energy conditions in the model is also investigated. © World Scientific Publishing Company.
    Original languageEnglish
    Pages (from-to)1439-1449
    JournalInternational Journal of Modern Physics D
    Issue number8
    Publication statusPublished - 1 Aug 2005


    • Accelerated expansion
    • Anti-de Sitter
    • Conformal matter
    • Energy condition
    • Perfect fluid
    • Phantom
    • Scale factor
    • Tachyon


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